A collection of many of the messages you can send to Pd to do dynamic patching and other stuff. There are more messages hidden in the tcl source code, but these are the most important:
pd-msg.zip

You find an overview in 1.msg_and_patch/0.all_msg.pd inside the zip.

i tried to find this collection on the web but didn't, so i thought i just post it.

@ingox Thank you so much for this.

Thanks.

You can also add those messages to pd:

audio-dialog (ex: audio-dialog 0 0 0 0 2 0 0 0 0 0 0 0 2 0 0 0 44100 5 0 64)
midi-dialog (ex: midi-dialog 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2)
midi-setapi
start-path-dialog
start-startup-dialog
audio-properties
midi-properties
zoom-open (0 or 1)
save-preferences
...

Basicaly you can poll all messages by using menu's and listening with:

[receive pd]
|
[print]

https://puredata.info/community/pdwiki/PdInternalMessages
and my bible for dynamic patching
https://puredata.info/docs/developer/PdFileFormat
some more stuff (some only windows or extended).... stuff.zip
David.

here someone made another nice collection/tutorial: https://github.com/fdch/fd_lib/tree/master/tutorials

thank you for these collections!

not dynamaic patching but still useful: list-view of an array

[;arrayname arrayviewlistnew(

found this by accident in the mailing-list. How could I have known?
[r pd] and [r arrayname] [print] won't work for this.

Edit:
seems like a full-text search through the sources for
class_addmethod
finds all those (internal) messages to vanilla-objects, arrays and such !?

https://github.com/pure-data/pure-data/search?p=1&q=class_addmethod